<!DOCTYPE html>
<style>
#container {
    overflow: scroll;
    width: 500px;
    height: 400px;

    background-attachment: local;
    background-image: linear-gradient(black, white);
}

#bloat {
    position: relative;
    left: 0;
    top: 10000px;
    width: 1px;
    height: 1px;
}
</style>
<div id="container">
    <div id="bloat"></div>
</div>
This test verifies a overflow clip container with background-attachment:local correctly repaints when its overflow changes size without scrolling.
